This is a full text calculator. Just enter your formula in the text box and tap the '=' button (or 'Return' on the keyboard). It keeps a history of your calculations. This way you can check for typos and errors in your calculations.

Features:
- Just tap the result or formula in the history to reuse it.

- Email the history for backup or further processing

- You can use the Google calculator as well (e.g. for unit conversions).